With their often complex reproductive needs and permeable skins, amphibians are often ecological indicators and in recent decades there has been a dramatic decline in amphibian populations of many species around the globe.

Reproductive success of many amphibians is dependent not only on the quantity of rainfall, but the seasonal timing.

In the tropics, many amphibians breed continuously or at any time of year.

The extent of adaptations to specific ecological circumstances among amphibians is remarkable, with many discoveries still being made.

In many classes of vertebrates, such as fish and amphibians, the three parts remain similar in size in the adult, but in mammals the forebrain becomes much larger than the other parts, and the midbrain becomes very small.

However, many species produce a far greater number of eggs during their lifetime than do humans, so that, in fish and amphibians, there may be hundreds, or even millions of fertile eggs present in the ovary at any given time.

It is observed in all mammals, all birds, and many reptiles, amphibians, and fish.

On land, all large crurotarsans ( non-dinosaurian archosaurs ) other than crocodilians, some remaining therapsids, and many of the large amphibians were wiped out.

In many amphibians, especially frogs, it takes on the more rounded form and there is often a greater quantity of white pulp.

In most subsequent forms, many of these early ribs have been lost, and in living amphibians and reptiles, there is great variation in rib structure and number.

The Memphis Zoo, which is located in midtown Memphis, features many exhibits of mammals, birds, fish, and amphibians from all over the world.

Additionally the area is a habitat for many species of animals including the hippopotamus ( Hippopotamus amphibius ), crocodile ( Crocodylus niloticus ) and many other mammals, amphibians, reptiles and the invertebrate communities.

As a result, many reptiles and amphibians are essentially voiceless ; frogs use ridges in the trachea to modulate sound, while birds have a separate sound-producing organ, the syrinx.

In many reptiles, fish, and amphibians this sac may reach considerable size.

In many amphibians, there is also a second auditory ossicle, the operculum ( not to be confused with the structure of the same name in fishes ).

The Tatra Mountains are home to many species of animals: 54 tardigrades, 22 turbellarians, 100 rotifers, 22 copepods, 162 spiders, 81 molluscs, 43 mammals, 200 birds, 7 amphibians and 2 reptiles.

Menorca does not have many species of reptiles or amphibians.

The fossil exhibits many characteristics of fish, but also indicates a transitional creature that may be a predecessor of amphibians, reptiles, birds, and mammals, including humans.

While many captive bred reptiles and amphibians are offered for sale at pet stores and reptile shows such as bearded dragons, corn snakes and leopard geckos, many animals sold are still removed from the wild.

She shined her light on the being resting inside and fishes and lizards came out, along with many other kinds of birds, mammals and amphibians.

Fauna that can be found include the Western Brush Wallaby, quenda, the southern bush rat, many small marsupial predators and a variety of reptiles and amphibians.

Living amphibians typically have greatly reduced skulls, with many of the bones either absent or wholly or partly replaced by cartilage.

Then there was no saying how many times the marine had blown his nose on the handkerchief.

Nobody knows how many Southerners there are in this category.

They are huge areas which have been swept by winds for so many centuries that there is no soil left, but only deep bare ridges fifty or sixty yards apart with ravines between them thirty or forty feet deep and the only thing that moves is a scuttling layer of sand.

While there may still be many Faulknerian Lucas Beauchamps scattered through the rural South, such men appear to be a vanishing breed.

Southern Liberals ( there are a good many ) -- especially if they're rich -- often exhibit blithe insouciance.

The same command is repeated as many times as there are levels in rank from general to corporal.

Of course, there must be clarity: a single distinct impression is more valuable than many fuzzy ones.

In this play there were so many characters and so much detail.

In this play there were some thirty or more named characters and I don't know how many more unnamed.

In addition, there are many areas of the human situation besides the impact of science and technology which are examined, for science-fiction dystopias often extrapolate political, social, economic tendencies only indirectly related to science and technology.

To those of my readers who find many of my opinions morally, or politically, or sociologically antiquated ( and I have reason to know that there are some such ), I would like to say what I have already hinted, namely, that some of my opinions may indeed be subject to some discount on the simple ground that I am no longer young and therefore incapable of being youthful of mind.

And there must be many Soviet citizens who know what is going on and who realize that before they can hope to enjoy the full life promised for 1980 they and their children must first survive.

The electric gadget is most helpful when there are many crowned teeth and in individuals who are elderly, bedfast with a chronic disease, or are handicapped by disorders such as cerebral palsy or muscular dystrophy.

On the question of admission to Veterans Administration hospitals of service-connected and non-service-connected disabled veterans, it must be recognized that there are many men who are greatly affected by war service.

No doubt, there was still a lot in the Draft Program -- and in Khrushchev's speech -- which left many points obscure.

He hadn't realized that there would be so much time to think, so many lulls.

Whether there were too few automobiles in 1940 or too many now is problematical.

No one really knows how many boats there actually are or what their aggregate value may be.

Although there are many sound reasons for adopting uniform and coordinated fiscal years in Rhode Island, there are also certain difficulties encountered.

In many communities there is simply no financial problem ; ;

But there are indications that many developing nations will welcome Peace Corps volunteers, and that if the volunteers are well chosen, they will soon demonstrate their value and make many friends.

The one- or two-season hunt, of which there have been too many recently, may do more harm than good ; ;

Following Mr. Brown's death, there came forward in the Brown & Sharpe organization many other men who contributed greatly to the development of the company.